Fireproof window.



R. E. BYRNEL FIREPROOP WINDOW APPLICATION FILED MAR 18, 1908,

Patented Feb. 23, 1909.

FIGaI.

WITNESSES. J A 0 .50 the front of the win ow,

UNITED sTATEs RODERICK EDWARD BYRNE, OF OTTAWA, ONTARIO, CANADA.

PATENT OFFICE.

FIREPROOF WINDOW.

fireproof windows and theobjects of my in-' o ventlon are to provide simple and effective means for instantaneously closing the window in case of fire, and to form a better joint between the two sashes and between the sash and frame, thereby preventing the entrahce'of wind or rain through the window,

and rendering the building more effectively fireproof. Further objects-are to render it practically impossible to tamper with the fusible means which operate to release the window or counterbalance of the sash in the case of fire,

and such means as can not be removed or replaced by non-fusible means without detection.

A considerable objection to various forms -of exteriorly located fuses or fusible links is that often through carelessness or thoughtlessness they become replaced by non-fusible wires, nails and hke fastening means and conse uently when the'fire occurs the window fai s to operate. The disadvantage of inclosing the fuse within the frame or other casing is that it is not then sensitive enough to the heat and 1t is always more or less uncertain whether or not the fuse is in working condition. In the present invention these defects are overcome by an improved counterbalance in the form of a receptacle filled with loose material having a discharge aperture on 46 the exterior of the window closed by a fusible plug which, when fused, permits the loose material to flow out of the receptacle, whereby the unbalanced window closes immedlately. v

The specific construction of the invention and the various improvements in detail thereof, are fully set 'forth.and described in the following specification and drawings.

' In the drawings, Fi re 1 is an elevation of tional view along the line 2-2, Fig. 1.3 Fig. 3 is a section along the line 33, Fig. 1. Fig. 4 is an enlarged sectional detail through a flange which extends between the two sashes.

e5 Fig. 5 is an enlarged sectional detail showing theconnection betwee'none of the sashes and Specification of Letters Patent.

Application filed March 18, 1908. Serial No. 421,835.

Fig. 2 is asec Patented Feb. 23, 1909.

the flange on the window frame. Fig. 6 is an enlarged sectional detail of theweight or counterbalance. F 1g. 7 is an enlarged sectwo sashes.

In the drawings, like characters of referfigure.

the .window frame of any suitable'or desirable construction, preferably as shown of hollow sheet metal. -B and C represent the lower and upper sashes respectively, which operate on each side of the central flange 10 provided on the frame, which flange, in fire embodiment illustrated, is substantially U-shaped in cross-section and pressed in the frame itself.

each sash is formed by interlocked flanges so as to eflectivel exclude the wind and water. In the em odiment illustrated, the flanges 11 and 12 adjacent to the sides of the flange 10 are formed by the sides of a plate 13 U-shaped in cross-section, and firmly secured to the flange 10 as by the screws 14 engaging blocks 15 riveted to the flanges. It is desirable that separate plates should be provided for the upper and lower parts of the window, that in the lower part being removable, permitting the sash to be easily removed for cleaning or other purposes.

sides 16 and 17 of the flange 10 and are engaged on their inner sides by flanges 18 formed on the sides of the sashes, which sashes, as shown, are formed of hollow sheet metal and preferably provided with panes 19 of fire-proof glass.

the usual manner by chains or wire cords 20, which extend over pulleys 21 in the top of the frame. The upper frame is made less in weight than the lower andprovided with counterbalancing weights, which enables the sashes to normally remain'in any desired relative position. When-the counterbalancing weightsv are removed, however, the windows are adapted to at once close on account of the heavier weight of the lower sash. Fu'sible means are provided for releasing the counterbalancing weight in the case of fire and the improved means which I have devised for accomplishing this consist of receptacles 22 located within the 1 upper sash C and having openings 23 on the Referring to the drawings, A represents The connection between the flange and The two sashes are connected together intional detail of the connection between the ence indicate corresponding parts in each A The flanges 11 and l2 extend parallel to the I .the hollow sash' C, the essential feature tending upwardly at an angle and a portion will be seen that by these means the counterbalancing weight-is located wholly within I the sash, while the fusible means for releasing the same is on the exterior thereof and if any attempt is' made to tamper with the fusible lug, the contents of ,the receptacle be discharged causing the window to remain closed. v

It is evident, that if desired the loose material 24 might be simply located within being that it is normally retained by fusible means, which are externally exposed.

The juncture between the sashes B and C is formed by interlocked flanges 26 and 27,

the flange 26 comprising a portion 28 externally horizontal, a portion 29 adjacent thereto extending downwardlyfa portion 30 ex- 31 extending downwardly at an angle, the-- two portions 30 and 31 being at an angle to: each other and the portion 30 being engaged by the flange 27 which is inclined at a suitable angle for thatpurpose. By this means a double contact is established on the interlocking flanges, thatis to say, the edge of the flange 27 abuts the portion31 ofthe flange t 2 6, while the portion 29 on the said flange abuts the flange 27. It will also be seen that as the flanges 26 and 27 have their outer edges free and disconnected from the window, they may yield slightly when-theymeet and thereby form a tighter joint.

As many changes can be made in the above construction and many apparently widely different embodiments of my invention can .be made Without departing from the spirit thereof, I intend that all, matter con tained in the above description or shown in the accompanying drawings, should be inter preted as illustrative and notqin a limiting It is therefore, to be understood that sense. the language used in the following claims is intended to cover all thegeneric and specific .Walls from those of the sash, and having a discharge opening through the sash, freely flowing material in the receptacle, and a fusible plug closing the discharge opening.

- 2. In a fire proof window, the combination with a hollow sheet metal sash, of a vertically extending tubular receptacle therein having separate Walls therefrom, and having a horizontally-turned end with a discharge opening through the sash, freely flowing material within the receptacle and a fusible plug closing the discharge opening. 3! In a fire-proof window, the combination 'downwardlyextending portion and a downwardly inclinedportion adjacent to the upwardly inclined portionytlie opposite flange being adapted to extend between the two said inclined portions the said flanges being connected at their inner edges alone to the window, whereby the outer edges may be free and the flanges themselves may yield slightly with respect to each other.

' In Witness whereof I have hereunto set my hand in the resence of two'w it'nesses.

\ JROD RIOK EDWARD BYRNE.

' Witnesses:

RUssEL S. SMART, .MARY C, LYo-N.

"'0 With the two sashes, of interlocking flanges on each, one flange being formed with an in t 50 features of the invention, herein described 

